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Technical Data Sheet
PartsTable / COMPONENT / 12SP39
12SP39 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 7.00 MILLIMETERS NOMINAL MM, overall_width: 0.4060 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-554-5309, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
12SP39
NSN: 3110-00-554-5309
FSC: 3110
CAGE: 61330 — U S ELECTRICAL TOOL INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter7.00 MILLIMETERS NOMINAL MM
overall_width0.4060 INCHES NOMINAL IN
seal_quantity1
load_directionRADIAL
surface_finishGROUND
inner_ring_width0.3860 INCHES NOMINAL IN
outer_ring_width8.00 MILLIMETERS NOMINAL MM
special_featuresW/OR W/O FELT CORE SEALS
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
bearing_seal_typeLABYRINTH
NSN3110-00-554-5309
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12SP39 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
BEARING SEAL TYPE: LABYRINTH
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
BORE SHAPE: STRAIGHT
•
OVERALL OUTSIDE DIAMETER: 22.00 MILLIMETERS NOMINAL MM
•
SURFACE FINISH: GROUND
TECHNICAL CHARACTERISTICS (FLIS)
RETAINER FABRICATION METHODPRESSED
BEARING SEAL TYPELABYRINTH
MATERIALSTEEL OVERALL
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
INTERNAL FIT-UP DESIGNATIONSTANDARD
BORE SHAPESTRAIGHT
OVERALL OUTSIDE DIAMETER22.00 MILLIMETERS NOMINAL MM
SURFACE FINISHGROUND
OUTER RING WIDTH8.00 MILLIMETERS NOMINAL MM
BORE DIAMETER7.00 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
5228Interchangeable
interchangeable cross-reference
interchangeable
8037Interchangeable
interchangeable cross-reference
interchangeable
9975112-4Interchangeable
interchangeable cross-reference
interchangeable
080374Interchangeable
interchangeable cross-reference
interchangeable
AA59581-127JACTInterchangeable
interchangeable cross-reference
interchangeable
37LInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12SP39?
12SP39 is a BEARING,BALL,ANNULAR.
What parts can replace 12SP39?
There are 26 known substitutes for 12SP39: 5228, 8037, 9975112-4 and 23 more. Substitute compatibility should be verified for your specific system.
Is 12SP39 still available?
12SP39 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026